Herbicidal composition for tolerant or resistant rice crops

Abstract

The invention provides herbicide combinations and the use of herbicide combinations for controlling harmful plants in rice crops wherein the herbicide combination in question comprises(A) a herbicide from the group of the compounds of the formula (A1)in which Z represents hydroxyl, —NHCH(CH3)CONHCH(CH3)COOH or —NHCH(CH3)CONHCH[CH2CH(CH3)2]COOH,or an ester or salt thereof, and(B) a herbicide of the formula (B1)in which X represents N or CH and R represents CO2H or a herbicidally active derivative thereof, and the rice crops are tolerant, if appropriate in the presence of safeners, to the herbicides (A) and (B) present in the combination.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to European Application 10163615.7 filed May 21, 2010, the contents of which are incorporated by reference in its entirety.BACKGROUND[0002]1. Field of the Invention[0003]The invention relates to the field of crop protection compositions which can be used against harmful plants in tolerant or resistant crops of rice and comprise, as herbicidally active compounds, a combination of two or more herbicides.[0004]2. Description of Related Art[0005]The introduction of tolerant or resistant rice varieties and rice lines, in particular mutagenic or transgenic rice varieties and rice lines, adds novel active compounds which per se are not selective in conventional rice varieties, to the conventional weed control system. The active compounds are, for example, the known broad-spectrum herbicides such as glyphosate, sulfosate, glufosinate, bilanafos (=bialaphos) and imidazolinone herbicides, which can now be employed i...

AI Technical Summary

Problems solved by technology

Furthermore, the herbicides exhibit weak points (zero effect) against specific species of harmful plants.

However, the combined use of a plurality of active compounds does not infrequently lead to phenomena of a chemical, physical and biological incompatibility, for example lacking stability of a coformulation, decomposition of an active compound or antagonism in the biological action of the active compounds.

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